This time-lapse image sequence spans just over an hour (7:50 a.m. to 9:00 a.m.) on February 10. The sequence, which is repeated 20 times in this "movie," shows subsidence and collapse of the northeast rim of the west pit within the Pu‘u ‘Ō‘ō crater on Kīlauea's East Rift Zone. The collapse deposited rubble on the floor of the pit adjacent to the small lava
pond that has been active in the pit for over two years. Pu‘u ‘Ō‘ō Crater is unstable and small collapses like this occur from time to time.